$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, "https://backlinksitesi.com/api/packages/list.php");
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_HTTPHEADER, array(
'x-user-email: xxx',
'x-user-password: xxx'
));
curl_setopt($curl, CURLOPT_POST, 0);
// curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false); EĞER SSL SORUNU YAŞARSANIZ BU SATIRI AKTİFLEŞTİRİN
$resp = curl_exec($curl);
curl_close($curl);
print_r($resp);